Our classroom is very clean. Do you know who＿＿＿cleaned it?
| A．was it that | B．it was that | C．was it who | D．he was |
The appearance of Jeremy Lin has ______ the fans of a sure victory for the Huston Rocket in the coming NBA contest.
| A．accused | B．expected |
| C．convinced | D．persuaded |
My friend Bob just bought an apartment in a suburb of Beijing last week, which is much smaller than ours, but is three times ________expensive.
| A．very | B．so | C．too | D．as |
Do you have any ______ to make on the recent development?
| A．impressions | B．comments |
| C．behaviour | D．opinions |
I saw Tom _____ into the classroom without _____.
| A．slide; found | B．sliding; find |
| C．sliding; being found | D．to slide; being found |
Only when the final examination was coming ______ he had quite a lot to do.
| A．he realized | B．he had realized |
| C．did he realize | D．had he realized |